Latin American and Caribbean Consortium of Engineering Institutions
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Conference Track: Emerging
Technologies
Keywords:
FRP, Reliability, Characterization
Contact Title:: Dr.
Contact First Name: Felipe J.
Contact Last Name: Acosta
University:
University of Puerto Rico at Mayaguez
Web:
Position:
Associate Professor
Country: USA
Email:
facosta@uprm.edu
Fax:
(787)833-8260
Abstract Title:
Abstract:
This work describes research aimed to probabilistically assess the
mechanical properties of a pultruded fiber-reinforced polymer (FRP)
reinforced with a 3D braid and roving.
In addition, reliability-based reduction factors for the design of
such materials are developed and proposed.
Moduli are investigated because the design of most civil
engineering applications is dominated by serviceability and buckling limit
states rather than strength. To
posses a certain level of confidence in these value estimation, it is
necessary to fully explode the material applications. This methodology
combines simplified classical lamination theory (CLT) in one case and a 3D
model for braid preforms in another case with experimental values in a
probabilistic model to simulate the randomness of the system by the Monte
Carlo technique. The accuracy
of the theoretical model is investigated, evaluating the coupling effect
caused by variations in constituents and fiber orientation.
Randomness is considered beginning at the micromechanical level
(fiber/matrix) up to the macromechanical level (ply mechanics).
All fibers were E-glass embedded in a vinyl ester resin matrix. Reduction factors for the material are suggested providing at
least a 95% confidence level.
Mailing Address:
Unversity of Puerto Rico at Mayaguez
Department of Civil Engineering and Surveying
PO Box 9041
Mayaguez, PR 00681-9041
Phone:
Authors:
Juan A. Román,juanro_jar@hotmail.com, UPRM
Felipe J. Acosta, facosta@uprm.edu, UPRM,(P)
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